Compare 221261 vs 221399
| Property | 221261 | 221399 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 2212611 | 2213991 |
| Prime factorization | 221261 | 221399 |
| Divisors count | 2 | 2 |
| Divisors | 1, 221261 | 1, 221399 |
| Number of properties | 3 | 4 |
| Chen primes | 8221st | |
| Isolated primes | 15042nd | |
| Primes | 19719th | 19726th |
| Pythagorean primes | 9837th | |
| Sexy primes (2nd member) | 4666th | |
| Twin primes (1st member) | 2340th | |
| Roman numberals | ||
| Base 2 | 1101100000010011012 | 1101100000110101112 |
| Base 3 | 1020201112123 | 1020202002223 |
| Base 4 | 3120010314 | 3120031134 |
| Base 5 | 240400215 | 240410445 |
| Base 6 | 44242056 | 44245556 |
| Base 7 | 16110357 | 16113237 |
| Base 8 | 6601158 | 6603278 |
| Base 9 | 3664559 | 3666289 |
| Base 10 | 22126110 | 22139910 |
| Base 11 | 14126711 | 14138211 |
| Base 12 | a806512 | a815b12 |
| Base 13 | 7993113 | 79a0913 |
| Base 14 | 5a8c514 | 5a98314 |
| Base 15 | 4585b15 | 458ee15 |
| Base 16 | 3604d16 | 360d716 |